Metal body and base, high temperature resistance, no deformation, no fracture, no aging Heavy duty base holded by tank or heavy project to stand steady Adjustable knob for easily adjust height and width Wide Application: Suitable for different sizes of pet boxes, widely used in variety of reptiles?plant and amphibians, including hermit crabs, bearded dragons, tortoises, turtles, geckos, lizards, frogs, spiders centipedes, succulent plants’ light fixtures Age range description: all life stages